ZFS Commands In "D" State

[Xin LI]

Yes, you can observe the progress with:

dtrace -qn 'zfs-dbgmsg{printf("%s\n", stringof(arg0))}'

.

I'm not 100% sure if that would be helpful for diagnosing your issue,
though.  What's the FreeBSD release?  Maybe you have a lot of memory
fragments? ( bugs.freebsd.org/194513 may be related?)

On Fri, Jun 9, 2017 at 8:46 AM, Tim Gustafson <tjg at ucsc.edu> wrote:
> I wanted to follow up with some new status on this.
>
> So, the zpool scrub is going still, but it's going *very* slowly:
>
> pool: backup
> state: ONLINE
> scan: scrub in progress since Thu Jun  8 15:15:59 2017
>   644G scanned out of 103T at 10.5M/s, (scan is slow, no estimated time)
>   0 repaired, 0.61% done
>
> I started another zfs send/receive before I left yesterday, and it did
> complete successfully.  I'm re-running last night's transfer again (it
> failed because the one I started before I left yesterday was still
> going), and it seems to be going at a reasonable rate of speed.  So,
> I'm really not sure what is happening here.  I'm still concerned that
> the zpool scrub is going so slowly.  Usually we can scrub that amount
> of data in 3-4 days; at this rate, it will probably take a month or
> two.
>
> Since there isn't a userland process for the scrub, is there another
> way I can procstat that process to see what it's doing?
>
> --
>
> Tim Gustafson
> BSOE Computing Director
> tjg at ucsc.edu
> 831-459-5354
> Baskin Engineering, Room 313A
>
> To request BSOE IT support, please visit https://support.soe.ucsc.edu/
> or send e-mail to help at soe.ucsc.edu.
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